Antibacterial coating composition, and method for manufacturing optical film including antibacterial nanoparticles

Abstract

The present invention relates to antibacterial nanoparticles, a hard coating composition comprising same, a hard coating, and an antibacterial optical film, and specifically, to antibacterial particles, a hard coating composition comprising same, a hard coating, and an antibacterial optical film, wherein the antibacterial particles include silica particles and Cu—S-based nanoparticles bonded to the surface of the silica particles.

What is claimed is: 
     
         1 . Antibacterial particles comprising silica particles and Cu—S-based nanoparticles in which the Cu—S-based nanoparticles are bound to the surface of the silica particles. 
     
     
         2 . The antibacterial particles according to  claim 1 , wherein the average diameter of the silica particles is 0.1 μm to 20 μm. 
     
     
         3 . The antibacterial particles according to  claim 1 , wherein the average diameter of the Cu—S-based nanoparticles is 10 nm to 100 nm. 
     
     
         4 . The antibacterial particles according to  claim 1 , wherein the Cu—S-based nanoparticles are copper sulfide nanoparticles having an atomic ratio of Cu:S of 1:0.5 to 1:15. 
     
     
         5 . The antibacterial particles according to  claim 1 , wherein the Cu—S-based nanoparticles are surface modified to introduce organic functional groups on the surface. 
     
     
         6 . A hard coating composition comprising a photo-curable resin and the antibacterial particles of  claim 1 . 
     
     
         7 . The hard coating composition according to  claim 6 , wherein the photo-curable resin is an acrylate-based resin. 
     
     
         8 . The hard coating composition according to  claim 6 , wherein the hard coating composition further includes a photoinitiator. 
     
     
         9 . The hard coating composition according to  claim 6 , wherein the hard coating composition comprises the photo-curable resin and the antibacterial particles at a weight ratio of 30:1 to 30:2. 
     
     
         10 . A hard coating comprising a photo-curable resin and the antibacterial particles of  claim 1 . 
     
     
         11 . An antibacterial optical film comprising an optical substrate and the hard coating of  claim 10 . 
     
     
         12 . The antibacterial optical film according to  claim 11 , wherein the hard coating has a thickness of 5 μm to 50 μm. 
     
     
         13 . A method for producing antibacterial particles, comprising a step of binding the Cu—S-based nanoparticles to the surface of the silica particles. 
     
     
         14 . The method for producing antibacterial particles according to  claim 13 , wherein the method further includes a step of surface modifying the Cu—S-based nanoparticles to introduce organic functional groups on the surface thereof.